| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [prep] a [noun] [prep] | 6580 |
|
| 2 | [adv] [prep] a [noun sg] [prep] | 6347 |
|
| 3 | [adv] [prep] [art] period [prep] | 168 |
|
| 4 | [adv] [prep] [art] period [prep] | 168 |
|
| 5 | [adv] [prep] a period [prep] | 138 |
|
| 6 | [adv] [prep] a period [prep] | 93 |
|
| 7 | [adv] [prep] a period [prep] | 93 |
|
| 8 | [adv] [prep] a period [prep] | 93 |
|
